Apparatus for treating ore-pulp.



B. MACDONALD.

APPARATUS FOR TREATING ORE PULP.

APPLlCATiON FILED MAR. 25. 1914,

1,163,097, Patented Dec. 7, 1915.

L INVENTOR I Maw WITNESSES pipes'mayb 'l gployed, :fourbeing shown inthe present infstance. The pipes may be supported at A their lower endsin anyfsuitable manner, as,

vfor instance, by struts 6 extending between. the sidewallsofilthetrough in the manner shown, and receiving the lower ends ofthe transfer pipes upon their 'uppensurfaces.

The lower end of each pipe E is open, as is shown pat the right ofFig.1, so asto permit nee entrance ofthe'slimes from the lower portionof the trough. The upper'ends of.

1 the transferpipes E are positioned by supports, 6 whose ends rest uponthe top of the side wall of'the tank. I p 7 p v 1 The 'slimes are forcedupwardly within the pipesrE by compressed air which i's led intothelowerends of the pipes E by air supply pipes'Reach ofrwhich isprovided with a" suitablenozzle f at itsupper' end. Each 'of'the'transfer' pipes E is provided" with an outlete positioned at, ornearjthe surface of the material within the tanks These outlets e arearranged parallel tothe adjacent sidewall of the tankf so that thematerial issuingfrom these outlets acts upon thefma-terial contained inthe tank to setup a circular motion thereof within thehtank.

I pipes E is insured.

I This circular motion ofythe material causes retardation ofthe-settllng of the heavier.

portions of the-material, so that action ried down to points under ornear'the lower open ends of the transfer pipes By reason of thisdeflection of the heavier portions of theslimes, the raising of thosepor-' tions of 3 the slimes through the transfer Another advantage ofthe construction herein shown is that the flowing from the use 7 work oftank readily performed." After an extended period of use the bottom,ofthe tank becomes coated 'with'the solid and semi-solid material inthe solution. When the tank has been emptied, this deposit canfbereadily scraped off of the sloping sides of the trough to a suitable f,discharge'opening in the bottom-of the tank.

7 .Instead of making thetank and the walls ofthe trough of wood asiabovedescribed,

they maybe .made .of sheet-metal. But in some cases the use of metal" inthe construetion of the tank cannot be resorted'to because of thecorrosive efiect of acids in the solution'as forinstance when treatin cor per 1n a soluti'oncontaining surfuric' acld.

For such uses, the'structure may be made of wood'as above described.I'claimj. 1 In apparatus of the character described, in combination,areceiving tank of circular nular ,tr'ough in the bottom'of the tankprovided vwith sloping sides, transfer pipes within the'tank'having openlower ends extending withinthe trough and terminating'adjacent'thebottomthereof, the lower ends, of said pipes being spacedfrom the sloping sides of'thetrough, outlets from said pipes near theirupper ends and disposed parallel to the adjacent wall of thetank, andmeans "for'causingthe' inaterialin the tank to flow upwardly throughsaid pipes from the trough toand through said outlets, whereby V awhirling motion is imparted to the entire body of the material in thetank from the v p form for the material'to be treated, an antop to" thebottomthereof; substantially as described. p In testimony whereof Iaffix my signature, in' presence of two witnesses.

. BERNARD MAGDONALD.

Witnesses: I I

' ELLA SCOTT," 1

EDITH RAMsEYQ flopies of this patentmayte obtained for 'jfive' centseach; by addressing the Commissioner-of Patents} Washington,1). G. 1 I V

